Nanoparticle fractionation of silica sol by the HPLC-SEC

• Main Authors: Lee,Yuhan, 李育翰
• Other Authors: Lee,Kuotong
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/31694254854844875083

碩士 === 明志科技大學 === 化學工程研究所 === 100 === In this study, size exclusion liquid chromatography (HPLC SEC) fractionates of nanoparticles of silica sol . Discuss the preparation of silica sol dispersion diameter grading efficiency and operating conditions for surface modification and particle size fractionation. In this study, silica sol of nanoparticles classification experiments is divided into three types: self-made silica sol, silica sol of silica nano powder to deploy, as well as commercially available.Regulation of nano particle size of the Stöber method made sol by aging time the availability of two particle size distribution of silica sol. Commercially available silica nano powder homogenizer, add three modifier: Sodium n-dodecyl sulfate (SDS), Triton X-100, Acetylacetone (HACAC).Among them, only SDS on particle dispersion enhance the effect of surface modification effect of the three to avoid the silica sol particles and the column packing adsorption. In this experiment, a commercially available silica sol, self made silica sol and the effect of commercially available nano gold sol, to investigate the particle size fractionation experiments and nano particle size classification. The results showed that poor grading effect of the commercially available silica sol and a commercially available nano gold colloids (commercially available silica sol Rs = 0.23, a commercially available nano gold colloids Rs = 0.49), while the homemade silica sol the difference of the two kinds of particle size distribution and better particle size fractionation effects (self made silica sol Rs = 0.55).